# Triangles

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511

Prove that the sum of the squares of the sides of rhombus is equal to the sum of the squar...

By Priya123, 3 years ago

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153

ABC is an equilateral triangle of side 2a. Find each of its altitudes.

By Priya123, 3 years ago

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509

ABC is an isosceles triangle with AC = BC. If AB^2 = 2AC^2, prove that ABC is a right tria...

By Priya123, 3 years ago

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145

ABC is an isosceles triangle right angled at C. Prove that AB^2 = 2AC^2.

By Priya123, 3 years ago

replies 1

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261

In Figure, ABD is a triangle right angled at A and AC ⊥ BD. Show that

By Priya123, 3 years ago

replies 1

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215

PQR is a triangle right angled at P and M is a point on QR such that PM ⊥ QR. Show that PM...

By Priya123, 3 years ago

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176

Sides of triangles are given below. Determine which of them are right triangles? In case o...

By Priya123, 3 years ago

replies 1

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145

Sides of two similar triangles are in the ratio 4 : 9. Areas of these triangles are in the...

By Priya123, 3 years ago

replies 1

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182

ABC and BDE are two equilateral triangles such that D is the mid-point of BC. Ratio of the...

By Priya123, 3 years ago

replies 1

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138

Prove that the area of an equilateral triangle described on one side of a square is equal ...

By Priya123, 3 years ago

replies 1

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